Re: raid5 write performance

2007-04-19 Thread Raz Ben-Jehuda(caro)
On 4/16/07, Raz Ben-Jehuda(caro) [EMAIL PROTECTED] wrote: On 4/13/07, Neil Brown [EMAIL PROTECTED] wrote: On Saturday March 31, [EMAIL PROTECTED] wrote: 4. I am going to work on this with other configurations, such as raid5's with more disks and raid50. I will be happy to hear your

Re: raid5 write performance

2007-04-19 Thread Neil Brown
On Thursday April 19, [EMAIL PROTECTED] wrote: Neil Hello I have been doing some thinking. I feel we should take a different path here. In my tests I actually accumulate the user's buffers and when ready I submit them, an elevator like algorithm. The main problem is the amount of IO's

[slightly OT] expanding lvm volume group after growing raid5 array

2007-04-19 Thread Gavin McCullagh
Hi Folks, I recently upgraded all four disks of a RAID5 array and then used mdadm --grow to grow the raid array into the new bigger partitions available to it and ran resize2fs. Lovely. However, I've just tried this again on a similar machine and have grown the array. However, I've just

FW: [slightly OT] expanding lvm volume group after growing raid5 array

2007-04-19 Thread Daniel Korstad
I have used lv with my past raid sets and it is very nice, adds some flexibility. I have also done a RAID5 reshape that was in an lv. Unfortunately, at the time I had an older LVM version that did not support pvresize. So I was stuck with a larger RAID set and my lv would not take

Re: FW: [slightly OT] expanding lvm volume group after growing raid5 array

2007-04-19 Thread Gavin McCullagh
Hi, On Thu, 19 Apr 2007, Daniel Korstad wrote: I have used lv with my past raid sets and it is very nice, adds some flexibility. I have also done a RAID5 reshape that was in an lv. Unfortunately, at the time I had an older LVM version that did not support pvresize. So I was stuck with